Finding the Fourth Proportional to 76,831,651.32, 115,247,673.81 and 31,393,445.82
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Solution
The fourth proportional to 76,831,651.32, 115,247,673.81 and 31,393,445.82 is: 47,090,249.15
Step by Step Solution
- Step 1: Write the proportion equation
76,831,651.32 : 115,247,673.81 = 31,393,445.82 : x - Step 2: Convert to fraction form
76,831,651.32/115,247,673.81 = 31,393,445.82/x - Step 3: Cross multiply
76,831,651.32x = 115,247,673.81 × 31,393,445.82 - Step 4: Simplify right side
76,831,651.32x = 3,618,021,603,635,268 - Step 5: Solve for x
x = 3,618,021,603,635,268/76,831,651.32 - Step 6: Final answer
x = 47,090,249.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.